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Herndon, VA, US Chesapeake, VA, US Harvey, LA, US Poway, CA, US Melbourne, FL, US Houston, US Fort Lauderdale, FL, US Emeryville, US Harvey, US Annapolis, US Huntington Beach, CA, US Kirkland, WA, US Poway, US York, PA, US Orlando, US

Function:  Engineering
Job Category:  Engineering

Electrical Engineer- Power System-Intern

Wärtsilä is an innovative technology company known for being a forerunner in the Marine and Energy markets. Every day, we – Wärtsilians - put our hearts and minds into turning Wärtsilä's purpose of enabling sustainable societies with smart technology, and our Smart Marine and Energy visions into reality.

We want to transition the world towards a cleaner future. By pushing the boundaries of engineering and technology, we can make it work. Together, we can create new business opportunities and more sustainable future that we can all be proud of.  Want to join the ride?

This internship is located in Herndon, Virginia. Candidates from other regions of the USA are welcome to apply, but no relocation assistance is being offered.


Your main responsibilities are: 


  • Support Lab testing for Battery energy storage system lab testing and Lithium Ion cell testing.
  • Design and configure battery energy storage systems including component selection, site layout, cable schedule, auxiliary load estimation, and battery sizing/configuration.
  • Design electrical schematics, one-line diagrams, and application/logic functional block diagrams in AutoCAD Electrical for energy storage systems including AC, DC, auxiliary power, control, and communications.
  • Review system specifications and develop electrical protection schemes and component selection such as breakers, fuses and relays for AC, DC, and auxiliary power of energy storage system.
  • Design and engineer cable schedules for AC and DC including one-line interpretation, ampacity calculation, and cable/termination selection.
  • Develop control solutions including I/O table, PLC selection, PLC logic development, testing, and deployment of solution into production environment.
  • Develop test plans for component and manufacturing suppliers and execute them onsite ensuring compliance to functional and QA requirements.
  • Participate in field testing and commissioning activities by developing test plans and collaborating with the field engineering team to execute and troubleshoot as needed.
  • Develop product documentation such as manuals, application notes, and technical specifications.
  • Collaborate in a team environment and/or take charge of opportunities to develop optimal solutions for customers and product development programs.



You will shine in this role when:

  • Electrical engineering undergrad or grad student focusing in power systems and renewable energy.
  • Interest in designing and configuring battery energy storage systems and battery enclosures.
  • Knowledge of design electrical circuits for LV, MV, and DC applications ensuring compliance to common design standard.



Last application date: 12/07/2021


This is Wärtsilä

Wärtsilä is a global leader in smart technologies and complete lifecycle solutions for the marine and energy markets. By emphasising sustainable innovation, total efficiency and data analytics, Wärtsilä maximises the environmental and economic performance of the vessels and power plants of its customers. In 2020, Wärtsilä’s net sales totalled EUR 4.6 billion with approximately 18,000 employees. The company has operations in over 200 locations in more than 70 countries around the world. Wärtsilä is listed on Nasdaq Helsinki. Find out more: 

Nearest Major Market: Washington DC